CN211022769U - Non-contact electromagnetic drive sector scanning ophthalmic ultrasonic transceiver - Google Patents
Non-contact electromagnetic drive sector scanning ophthalmic ultrasonic transceiver Download PDFInfo
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- CN211022769U CN211022769U CN201921527095.7U CN201921527095U CN211022769U CN 211022769 U CN211022769 U CN 211022769U CN 201921527095 U CN201921527095 U CN 201921527095U CN 211022769 U CN211022769 U CN 211022769U
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- hall element
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- sector scanning
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- 238000007789 sealing Methods 0.000 claims description 9
- 238000002604 ultrasonography Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000009347 mechanical transmission Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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Abstract
The utility model discloses a non-contact electromagnetic drive sector scanning ophthalmology supersound send-receiver device, including shell and the articulated ultrasonic transducer who installs the front end in the shell, ultrasonic transducer's rear end fixedly connected with fan-shaped magnet, still install around fan-shaped magnet's coil and with coil assorted hall element in the shell, change the direction that electric current flows in the coil by the hall element of circular telegram, thereby produce the repulsion force opposite with fan-shaped magnet, thereby drive fan-shaped magnet and ultrasonic transducer and reciprocate the swing back and forth according to certain cycle, moreover, the steam generator is simple in structure, thereby vibrations and noise that mechanical transmission brought are eliminated fundamentally, and the precision that the transmission interval brought reduces the problem has been eliminated; compared with the motor-driven rotary magnetic drive technology, the magnetic drive device has lower vibration and noise, higher scanning precision and lighter weight.
Description
Technical Field
The utility model relates to an ophthalmology medical treatment technical field especially relates to a fan-shaped scanning ophthalmology supersound send-receiver device of non-contact electromagnetic drive.
Background
The utility model provides a present scanning ophthalmology supersound send-receiver device, it includes the shell and articulates the swing bulb support of installing the shell head position, the upper and lower both ends of swing bulb support are fixed with an ultrasonic transducer and fan-shaped magnet respectively, the motor is installed to the lower extreme in the shell, gear reduction box and circular magnet, the motor passes through gear reduction box and drives circular magnet and rotate, circular magnet just faces fan-shaped magnet, circular magnet is opposite with the fan-shaped magnet magnetic pole on the swing bulb support, the circular magnet that rotates according to the principle that opposite poles attract mutually just enables fan-shaped magnet directional circular magnet all the time, because fan-shaped magnet fixes on swing bulb support, swing bulb support can only be on the stationary plane back and forth movement, so rotatory circular magnet just can drive bulb support swing back and forth, make ultrasonic transducer accomplish the action of sector.
However, according to the scheme, the working mode that the motor drives the circular magnet is adopted, the rotating speed of the motor is high, so that the requirement of scanning speed is met by reducing the rotating speed of the circular magnet through the gear reduction box, noise and vibration can be caused by the operation of the motor and the gear reduction box, the scanning precision can be reduced due to the inevitable transmission intermittence, and meanwhile, the defect of high quality of the probe is caused due to the existence of the motor and the gear reduction box.
Therefore, the non-contact electromagnetic drive sector scanning ophthalmic ultrasonic transceiver with simple structure is developed by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a non-contact electromagnetic-driven sector-scanning ophthalmic ultrasound transceiver with a simple structure.
In order to achieve the above object, the utility model provides a fan-shaped scanning ophthalmology supersound send-receiver device of non-contact electromagnetic drive, install including shell and articulated the ultrasonic transducer of front end in the shell, ultrasonic transducer's rear end fixedly connected with fan-shaped magnet, still install in the shell around fan-shaped magnet's coil and with coil assorted hall element.
An electromagnet coil rack is fixedly installed in the shell, the ultrasonic transducer and the fan-shaped magnet are respectively installed at the upper end and the lower end of a transducer support, and a hinge shaft is arranged between the transducer support and the electromagnet coil rack.
The electromagnet coil rack is provided with a magnet groove for accommodating the fan-shaped magnet, and the coil is wound on the outer side wall of the magnet groove.
And a Hall element mounting groove for accommodating the Hall element is formed in the bottom of the magnet groove.
The Hall element is fixedly arranged on a Hall element fixing seat, and the Hall element fixing seat is embedded in the Hall element mounting groove.
And the outer side wall of the electromagnet coil rack is provided with a coil groove for accommodating the coil.
The middle part of the energy converter support is provided with a partition plate, the lower end of the energy converter support is provided with a magnet fixing clamp for clamping the magnet, and the ultrasonic energy converter is provided with a lead penetrating through the partition plate.
The shell encloses the shell under enclosing shell and the probe on enclosing shell and the probe including probe cover, the probe that from top to bottom connects gradually, electromagnet coil former fixed mounting enclose the shell on the probe in the space that constitutes with the probe cover.
And a sealing ring is clamped between the outer side wall of the electromagnet coil frame and the inner side wall of the probe cover, and a sealing ring groove for accommodating the sealing ring is arranged on the outer side wall of the electromagnet coil frame.
The utility model has the advantages that: the utility model discloses a fan-shaped scanning ophthalmology supersound send-receiver device of non-contact electromagnetic drive, including shell and the articulated ultrasonic transducer who installs the front end in the shell, ultrasonic transducer's rear end fixedly connected with fan-shaped magnet, still install the coil around fan-shaped magnet in the shell and with coil assorted hall element, change the direction that the electric current flows in the coil by the hall element of circular telegram, thereby produce the repulsion force opposite with fan-shaped magnet, thereby drive fan-shaped magnet and ultrasonic transducer and according to the reciprocal back and forth swing of certain cycle, moreover, the steam generator is simple in structure, thereby vibrations and noise that mechanical transmission brought are eliminated fundamentally, and the precision that transmission intermittent type brought has been eliminated and has been reduced the problem; compared with the motor-driven rotary magnetic drive technology, the magnetic drive device has lower vibration and noise, higher scanning precision and lighter weight.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a structural sectional view of the present invention;
Fig. 3 is an exploded view of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, a non-contact electromagnetic drive sector scanning ophthalmic ultrasonic transceiver comprises a housing 1 and an ultrasonic transducer 2 hinged to the front end of the housing 1, wherein a sector magnet 3 is fixedly connected to the rear end of the ultrasonic transducer 2, a coil 4 surrounding the sector magnet 3 and a hall element 5 matched with the coil 4 are further installed in the housing 1, and the energized hall element 5 changes the flowing direction of current in the coil 4, so as to generate a repulsive force opposite to the sector magnet 3, so that the sector magnet 3 and the ultrasonic transducer 2 are driven to reciprocate back and forth according to a certain period, and the structure is simple, so that vibration and noise caused by mechanical transmission are fundamentally eliminated, and the problem of accuracy reduction caused by transmission intermittence is eliminated; compared with the motor-driven rotary magnetic drive technology, the magnetic drive device has lower vibration and noise, higher scanning precision and lighter weight.
In this embodiment, an electromagnet coil rack 6 is fixedly installed in the housing 1, the ultrasonic transducer 2 and the sector magnet 3 are respectively installed at the upper end and the lower end of a transducer support 11, a hinge shaft 16 is arranged between the transducer support 11 and the electromagnet coil rack 6, the electromagnet coil rack 6 is fixed, the transducer support 11 swings on the electromagnet coil rack 6 through the hinge shaft 16, and thus, no other mechanical transmission participates in the whole sector scanning process except that the transducer support 11 and the electromagnet coil rack 6 are positioned by adopting shaft pin connection.
The electromagnet coil rack 6 is provided with a magnet groove 7 for accommodating the fan-shaped magnet 3, and the coil 4 is wound on the outer side wall of the magnet groove 7; the outer side wall of the electromagnet coil rack 6 is provided with a coil groove 10 for accommodating the coil 4; a Hall element mounting groove 8 for accommodating the Hall element 5 is formed at the bottom of the magnet groove 7; the hall element 5 is fixedly arranged on a hall element fixing seat 9, and the hall element fixing seat 9 is embedded in the hall element mounting groove 8.
A partition plate 12 is arranged in the middle of the transducer support 11, a magnet fixing clamp 13 for clamping the fan-shaped magnet 3 is arranged at the lower end of the transducer support, and a lead 15 penetrating through the partition plate 12 is arranged on the ultrasonic transducer 2; the shell 1 comprises a probe cover 17, an upper probe surrounding shell 18 and a lower probe surrounding shell 19 which are sequentially connected from top to bottom, the electromagnet coil rack 6 is fixedly installed in a space formed by the upper probe surrounding shell 18 and the probe cover 17, the lower end of the lower probe surrounding shell 19 is further connected with a lower probe surrounding shell 22 and a probe wire protecting sleeve 23, and a lead 15 penetrates through the probe wire protecting sleeve 23 and is connected with a power supply.
The probe upper enclosure 18 is also provided with a buckling ring 24 protruding radially inwards, and the outer side wall of the electromagnet coil rack 6 is provided with a buckling groove 25 for accommodating the buckling ring 24; a sealing ring 20 is clamped and installed between the outer side wall of the electromagnet coil frame 6 and the inner side wall of the probe cover 17, and a sealing ring groove 21 for accommodating the sealing ring 20 is arranged on the outer side wall of the electromagnet coil frame 6; simple structure, the assembly is firm.
The utility model discloses a theory of operation does:
In the scheme, the Hall element 5 is a linear Hall element, the transducer support 11 is made of industrial plastics and has a lubricating effect, a small gap is formed between the transducer support and the hinged shaft 16, and the transducer support 11 can swing in a fan shape by taking the hinged shaft 16 as a swing center; the swinging driving force of the transducer support 11 is sent by the electrified coil, and the direction of the electromagnetic force of the coil can be changed by knowing the direction of the current flowing through the coil according to the ampere rule, so that the magnetic force direction in the coil is changed by changing the direction of the current flowing through the coil through the control system, when the fan-shaped magnet 3 on the transducer support 11 is controlled to swing back and forth, the magnetic pole is close to or far away from the Hall element, and the output level of the Hall element is changed accordingly. The output is collected as a feedback detection signal, the electromagnetic force is changed by changing the current in the coil, so that the swinging speed of the transducer support 11 is controlled to control the state of the feedback signal, and when the Hall output signal is controlled to be consistent with a working curve preset by requirements, the transducer support 11 swings in a sector scanning mode according to the requirements.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A non-contact electromagnetic drive sector scanning ophthalmology ultrasonic transceiver comprises a shell (1) and an ultrasonic transducer (2) which is hinged to the inner front end of the shell (1), wherein a sector magnet (3) is fixedly connected to the rear end of the ultrasonic transducer (2), and the non-contact electromagnetic drive sector scanning ophthalmology ultrasonic transceiver is characterized in that: and a coil (4) surrounding the fan-shaped magnet (3) and a Hall element (5) matched with the coil (4) are also arranged in the shell (1).
2. The non-contact electromagnetically driven sector scanning ophthalmic ultrasound transceiver of claim 1, wherein: an electromagnet coil rack (6) is fixedly installed in the shell (1), the ultrasonic transducer (2) and the fan-shaped magnet (3) are respectively installed at the upper end and the lower end of a transducer support (11), and a hinge shaft (16) is arranged between the transducer support (11) and the electromagnet coil rack (6).
3. The non-contact electromagnetically driven sector scanning ophthalmic ultrasound transceiver of claim 2, wherein: the electromagnet coil rack (6) is provided with a magnet groove (7) for containing the fan-shaped magnet (3), and the coil (4) is wound on the outer side wall of the magnet groove (7).
4. The non-contact electromagnetically driven sector scanning ophthalmic ultrasound transceiver of claim 2, wherein: and a Hall element mounting groove (8) for accommodating the Hall element (5) is formed in the bottom of the magnet groove (7).
5. The non-contact electromagnetically driven sector scanning ophthalmic ultrasound transceiver of claim 3, wherein: the Hall element (5) is fixedly arranged on a Hall element fixing seat (9), and the Hall element fixing seat (9) is embedded in the Hall element mounting groove (8).
6. The non-contact electromagnetically driven sector scanning ophthalmic ultrasound transceiver of claim 2, wherein: and the outer side wall of the electromagnet coil rack (6) is provided with a coil groove (10) for accommodating the coil (4).
7. The non-contact electromagnetically driven sector scanning ophthalmic ultrasound transceiver of claim 2, wherein: the middle part of the energy converter support (11) is provided with a partition plate (12), the lower end of the energy converter support is provided with a magnet fixing clamp (13) for clamping the fan-shaped magnet (3), and the ultrasonic energy converter (2) is provided with a lead (15) penetrating through the partition plate (12).
8. The non-contact electromagnetically driven sector scanning ophthalmic ultrasound transceiver of claim 2, wherein: shell (1) encloses under shell (18) and the probe including enclosing on probe lid (17), the probe that from top to bottom connects gradually shell (19), electromagnet coil former (6) fixed mounting enclose in the space that shell (18) and probe lid (17) constitute on the probe.
9. The non-contact electromagnetically driven sector scanning ophthalmic ultrasound transceiver of claim 7, wherein: and a sealing ring (20) is clamped and installed between the outer side wall of the electromagnet coil rack (6) and the inner side wall of the probe cover (17), and a sealing ring groove (21) for accommodating the sealing ring (20) is formed in the outer side wall of the electromagnet coil rack (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921527095.7U CN211022769U (en) | 2019-09-12 | 2019-09-12 | Non-contact electromagnetic drive sector scanning ophthalmic ultrasonic transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921527095.7U CN211022769U (en) | 2019-09-12 | 2019-09-12 | Non-contact electromagnetic drive sector scanning ophthalmic ultrasonic transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211022769U true CN211022769U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921527095.7U Expired - Fee Related CN211022769U (en) | 2019-09-12 | 2019-09-12 | Non-contact electromagnetic drive sector scanning ophthalmic ultrasonic transceiver |
Country Status (1)
| Country | Link |
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| CN (1) | CN211022769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113100829A (en) * | 2021-03-15 | 2021-07-13 | 中国医学科学院生物医学工程研究所 | Anterior segment three-dimensional ultrasonic scanning imaging device and method |
-
2019
- 2019-09-12 CN CN201921527095.7U patent/CN211022769U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113100829A (en) * | 2021-03-15 | 2021-07-13 | 中国医学科学院生物医学工程研究所 | Anterior segment three-dimensional ultrasonic scanning imaging device and method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200717 |